Les avis peuvent bien sûr diverger sur cette question, mais on peut citer le classement suivant, synthèse d'autres classements :
| Cas | Année | Type (Hynek) | Étrangeté (/5) | Indices | Enquête | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| enregistrés | physiques | constatés | ||||||||||
| Radar | Film | Photo | Résidus | Traces | Visuelle | EM | Non identifié | Identifié | ||||
Trindade |
en | DD | 4 | 0 | 0 | 4 | 0 | 0 | 48 | 0 | ||
Minot |
en | DD | 3 | 2 | 0 | 0 | 15 | 1 | ||||
| Lakenheath | en | LN | 2 | 4 | 0 | 0 | 0 | 0 | n | 0 | Condon, Gordon D. Thayer (AIAA) | |
RB-47 |
en | RR2 | 2 | 2 | 0 | 0 | 0 | 0 | 6 | 0 | McDonald | |
Tehéran |
en | RR2 | 3 | 3 | 0 | 0 | 0 | 5 | 3 | DIA | ||
Cocoyoc |
en | RR2 | 3 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | APRO, MUFON | |
Great Falls |
en | DD | 2 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | ATIC, Condon | |
McMinnville |
en | DD | 4 | 0 | 0 | 2 | 0 | 0 | 2 | 0 | Condon, Maccabee, McDonald | Klass, Antoine
Cousyn / François Louange |
Chauvet |
en | DD | 4 | 0 | 0 | 4 | 0 | 0 | 1 | 0 | Pierre Guérin |
Antoine
Cousyn/ François Louange |
Duboc |
en | RR1 | 3 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | SEPRA | |
Vancouver |
en | DD | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | Haines | |
Levelland |
en | RR2 | 2 | 0 | 0 | 0 | 0 | 15 | Oui | Hynek, Lagarde | ||
Chesapeake Bay |
en | DD | 2 | 0 | 0 | 0 | 0 | 2 + (6 + 2) | 0 | Blue Book | Menzel | |
Boianai |
en | RR1 | 3 | 0 | 0 | 0 | 0 | 38 | 0 | McDonald | ||
Fort Itaipú |
en | RR2 | 3 | 0 | 0 | 0 | 2 | 2 + n | 1 | |||
| Vol 117 | en | RR1 | 2 | 0 | 0 | 0 | 0 | 14 | 0 | Keyhoe, McDonald | ||
Coyne |
en | 2 | 0 | 0 | 0 | 9 | ||||||
| Betty & Barney Hill | en | RR1 + RR3 | 3 | 0 | 0 | 0 | 0 | 2 (hyp) | 0 | |||
Exeter |
en | 3 (plusieurs policiers) | ||||||||||
Ravenna |
en | 2 | plusieurs policiers | |||||||||
| Fogarty | en | multiple RV | 2 | 1 | ||||||||
Lubbock |
en | LN | 1 | 5 | 0 | |||||||
Tremonton |
en | DD | 1 | 0 | 1 | 0 | 0 | 4 | 0 | GSW | Harold P. Robertson , William K. Hartmann , (Edward J.
Ruppelt )
|
|
Soccorro |
en | RR3 | 4 | 0 | 0 | 0 | 1 | 1 | 0 | |||
Washington (DC) |
en | 2 | 2 | 0 | 0 | Crow, Loren W. | ||||||
Mont Rainier |
en | DD | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | ||
| Rapid City | 1953 | LN, RV multiples | 2 | Oui | Condon | |||||||
| Red Bluff | 1960 | |||||||||||
| Willis Sperry | 1950 | RR1 | 1 | |||||||||
Trans-en-Provence |
1981 | RR2 | 4 | 0 | 0 | 0 | 2 | 1 | 0 | GEPAN | ||
Kinross AFB |
en | RV | 1 | 1 | 0 | 0 | 2 (épave avion + objet non identifié) | 0 | ? | 0 | Keyhoe | |
| Clare Booth Luce | en | RR1 | 2 | 0 | 0 | 0 | 0 | 0 | 1+ 1000s | 0 | McDonald | |
Goose Bay |
en | 0 | 0 | 0 | 2 | 0 | Condon | |||||
| Wilcox dans le New Jersey avec long dialogue | en | RR3 | 5 | |||||||||
| Chiles-Whitted | en | 0 | 2 | |||||||||
Ubatuba |
en | - | 2 | 0 | 0 | 0 | 1 | 0 | (0) | 0 | Craig, Roy F. (Rapport Condon) | |
Salem |
1952 | RR1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | |||
| Emil J. Smith | en | RR1 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | McDonald | ||
Rex Heflin / Santa Anna |
en | RR2 | 4 | 0 | 0 | 4 | 0 | 0 | 1 | 1 | ||
Mantell |
1948 | RR1 | 1 | 0 | 0 | 0 | 0 | n | 0 | |||
Roswell |
en | - | 2 | 0 | 0 | 0 | n | ? | >= 2 | 0 | Bourdais (HET), Friedman (HET) | Jeffreys |
Références :
- Vallée, J. & J. "Survey of 29 U.S. UFO organizations (about 13 responding) of most significant or convincing UFO sightings", Challenge to Science, 1966
- Story, Ronald et Greenwell, J. Richard. "October 1979 survey of 90 leading UFO researchers (33 responding) strongest UFO evidence on record", UFOs and the Limits of Science, 1981